Thanks to Robert Xiao.

 * _PyUnicode_CheckConsistency() now takes a PyObject* instead of void*
 * Remove now useless casts to PyObject*

 * Fix decode_code_page_errors() result
 * Inline decode_code_page() and encode_code_page_chunk()
 * Replace the PyUnicodeObject type by PyObject

The code is not correct, but at least it doesn't crash anymore.

of a Unicode string.

This is an incompatible change, but putp() is used to emit terminfo commands,
which are bytes strings, not Unicode strings.

Unicode string.

This is an incompatible change, but putp() is used to emit terminfo commands,
which are bytes strings, not Unicode strings.

The code I fixed to comply with PEP 3147 still had one bug: When run
under python -O, some paths for pyc files would be pyo, because I called
imp.cache_from_source without explicit debug_override argument in some
places, and under -O that would return .pyo (this is well explained in
the imp docs).  Now all code (util.byte_compile, build_py, install_lib)
can create .pyo files according to options given by users,
without interference from the calling Python’s own optimize mode.

On a related topic, I also removed the code that prevented byte
compilation under python -B.  The rationale is that packaging gives
control over the creation of pyc files to the user with its own explicit
option, and the behavior should not be changed if the calling Python
happens to run with -B for whatever reason.  I will argue that this is a
bug fix and ask to be allowed to backport this change to distutils.

Finally, I moved one nugget of information about the --compile and
--optimize options from the source into the doc.  It clears up a
misunderstanding that I (and maybe other people) had.

New wording is taken straight from the PEP, so this time should be good
:)

instead of a Unicode string.

This is an incompatible change, but the previous behaviour was completly wrong.